<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>404</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }
    .not-match {
      width: 100%;
      background: #eeeeee;
      position: absolute;
      height: 100%;
    }

    .not-match .inner {
      width: 350px;
      height: 350px;
      background: #eeeeee;
      position: absolute;
      margin: auto;
      left: 0;
      top: 0;
      right: 0;
      bottom: 0;
    }

    .not-match .inner:before {
      content: '';
      display: block;
      width: 100%;
      background: white;
      height: 100%;
      filter: blur(30px);
      border-radius: 50%;
    }

    .not-match img {
      position: absolute;
      margin: auto;
      left: 0;
      top: 0;
      right: 0;
      bottom: 0;
    }

    .not-match h2 {
      position: absolute;
      bottom: 0;
      text-align: center;
      color: #555;
      width: 100%;
      line-height: 1.5;
      font-weight: normal;
    }

    .not-match a {
      color: #1da57a;
    }
  </style>
</head>
<body>
<div class='not-match'>
  <div class='inner'>
    <img src='./images/404.png' />
    <h2>
      哎呀…亲…您访问的页面不存在
      <br>
      <a href="/">返回首页</a>
    </h2>
  </div>
</div>
</body>
</html>